thompson



(No Model.) 7 Sheets-Sheet 1.

R. THOMPSON.

MAGHINE FOR SEWING SHANK BUTTONS T0 BOOTS, &c.

No. 353,609. Patented Nov. 30, 1886'.

By. z

[11 men to r,-

(asses;

7 Sheets-Sheet 2.

(No Model.)

B. THOMPSON.

MACHINE FOR SEWING SHANK BUTTONS T0 BOOTS, &c.

No. 353,609. Patented Nov. 30, 1886.

jq'zmsm;

[n veni'br;

N. PETERS, Phnln-Lilhngmpher, Washinglon. D. c.

(No Model.) 7 Sheets-Sheet 3.

R. THOMPSON.

MACHINE FOR SEWING SHANK BUTTONS T0 BOOTS, &c. No. 353,609. PatentedNov. 30, 1886.

N. PETERS. phnkruflwgmphen Washington. 0.12.

(No Model.) I 7 Sheets-Sheet 4. R. THOMPSON.

MACHINE FOR EWING SHANK BUTTONS TO BOOTS. 550.

No. 353,609. Patented Nov. 30, 1886.

12 be. 721 0 r;

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N PETERS, Pnowumn m hor. Washlnglon. D. C.

(No Model.) 7 Sheets-'-Sheet 5. R. THOMPSDN.

MACHINE FOR SEWING SHANK BUTTONS T0 BOOTS, &c. No. 353,609.

Patented'Nov'. 30, 1886.

N, Puzns. Phowumu m nu, wmm wn. D. c.

(No Model.) 7 Sheets-Sheet 6.

R. THOMPSON.

MAGHINE FOR SEWINGSHANK BUTTONS T0 BOOTS, '&c.

No. 353,609. Patented Nov. 30, 1886.

[71 ve ntar;

N. PETERS. Pholu-Lnhcgmpher, Washmgwn. nu

(No Model.) 7 Sheets-Sheet 7.

R. THOMPSON.

MACHINE FOR SEWING SHANK BUTTONS T0 BOOTS, &c.

No. 353,609. Patented Nov 30, 1886.

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N. PETERS. PhclO-Lilhognphqr, Wnhinglon. D I;

UNiTEn STATES PATENT OFFICE.

ROSFJVELL THOMPSON, OF BRIDGEPORT, OONN.,ASSIG1\ OR TO THE MORLEY BUTTONSEXVING MACHINE COMPANY, OF BOSTON, MASS.

MACHlNE FOR SEWING SHANK-BUTTONS TO BOOTS, 80C.

SPECIFICATION forming part of Letters Patent No. 353,609, dated November30,1886.

Serial No. 198,617. (No model.)

To all whom it may concern:

Be itknown that I, RosEwELL THOMPSQN, a citizen of the United States,residing at Bridgeport, in the county of Fairfield and State ofConnecticut, have invented an Improved Machine for Sewing Shank- Buttonsto Boots, Shoes, and other Fabrics; and I do hereby declare thefollowing to be a full, clear, and exact description of the constructionand opera- [0 tion of the same, reference being had to the accompanyingdrawings, making a part of this specification.

The object of my invention is to more closely and snugly secure shank-buttons to boots,

shoes, and other fabrics than has heretofore been done by the use of acord or thread, and at the same time produce a form of stitch whichinsures strength, durability, and neatness; and my improvement consistsin causing a straight needle-bar to oscillate alternately between theangles of fifty-five degrees and sixty-two degrees (more or less) duringthe operation of sewing the button to the fabric, so that a straightneedle secured to the lower 2 end of said bar may pierce the goods atsuch an angle with respect to the face of the material to be sewed as toallow both the shank and body of a button to rest upon the fabric whenpresented to said needle during the entire pro- 0 cess of forming astitch through the eye of the same; also, in the manner of operating thedevices for controlling the main and locking loops which compose thestitch, and in the arrangement of certain mechanism for feeding thegoods after the stitch is completed, as will hereinafter appear.

In the accompanying drawings, Figure 1 is a perspective view of myimproved machine, showing the top, left side, and front as it appearswhen secured to a bench for practical use. Fig. 2 is a perspective viewof a strip of material on which a series of shank-buttons have beensewed and then bent C-shaped, so as to clearly show the appearance ofthe stitch 5 made by this machine upon both sides of the fabric. Fig. 3is a leftside elevation of the machine. Fig. 4. is a top view of thesame. Fig. 5 is an enlarged left-side view of the front end of theprojecting horn, showing some of the mechanism contained therein,together with presser-foot, needle, and extreme end of buttontrough.Fig. 6 is an enlarged top view of front end of projecting horn with topplate and feed-bar removed, so as to expose the internal mechanism. Fig.'7 is a right-side elevation of the machine, showing the constructionand arrangement of the button-feeding mechanism. Fig. 8 is a front viewof the machine, also showing button-feeding mechanism, but withneedle-bar bearing certain 1e 6e vers and other operating devicesremoved. Figs. 9 and 10 are enlarged side and top views of a portion ofthe button-trough and all of the revolving button-table with hopper-bowlremoved. Fig. 11 is an enlarged cross-section of the button-trough withshank button in feeding position. Fig. 12 is an enlargcdbottom View ofthe worm gear-wheel with ratchet and pawl, which revolve thebutton-shaft and table. Fig. 13 is a back view of the extreme end of thebutton trough, together with the lever which causes said trough to swingaway from the button after the latter is secured in position by thethread. Fig. 14 isa bottom view of the machine, showing the positions ofcams, driving-gears, levers, and other meehanism contained therein, andalso the buttontrough and other devices which operate in connection withthe projecting horn. Fig. 15 is a cross-section of the body ofthe-machine on line 1 1, Fig. 4, and a longitudinal section of the hornthrough the center, showing feeding mechanism and cam which operates thesame. Fig. 16 is a top view of horn with top plate removed, and asectional view of a portion of the lower half of thcbody of themachine,also showing feeding mechanism and operatingcams. Fig. 17 is an enlargedlongitudinal section of front end of horn, showing feedpin and someother devices more clearly than in Fig. 15. Fig. 18 is an enlarged crosssection of horn just in front of the feed pin and lifting rock'shaft,showing the manner of lifting said pin by the device on the end of therockshaft. Figs. 19 and 20 are enlarged views of the device on theopposite end of the feedpin liftingshaftand portion of the cam whichoperates the same. Fig. 21 is a erosssection of the body of the machineon line 2 2, Fig. 4, and longitudinal section of horn through the cen-[O0 ter, showing the cam and lever which operate the needle-bar, lever,bar, and vibratingseg- 1 of the needle.

- hooks and locking-loop spreader.

mentwhich turn the needle-barand needle during the sewing operation, andmain loop- -controlling mechanism. Fig-22 is a top view of horn with topplate removed and a portion of lower half of the body of the machine,showing certain cams and'levers and main loopcontrolling bar and hooksin center of horn. Fig. 23 is an enlarged longitudinal section of frontend of horn, showing the main loop-controlling hooks just entering theloops each side Fig. 24 is an enlarged top view of front end of hornwith top plate removed, also showing main loop controlling books justentering the loops each side of the needle.

25.is an enlarged longitudinal section of horn, showing mainloop-controlling hooks drawing the main loop back against the needlejnstbefore the latter is raised. Fig. 26 is a view of the cams, levers, andportions of bars which operate the main loop-controlling Fig. 27 is aview of the cam, lever, and portion of connecting-bar which oscillatethe needle-barbearings, and cam'on periphery which swings button-troughaway from button after thelatter is secured in position by the thread.Fig. 28 is a sectional view of body of the machine on 'line 2 2, Fig. 4,showing the threadcontroller cam, lever, and rod; cam,lever, and portionof bar which tn rn needle-bar and needle, lockingloop spreader and bar,needle-ban bearing-support, and portion of treadlc-rod for lifting thelatter. Fig. 29 is a top view of horn with top erating' threadcontrolling device, also rod and thread-controller, together with edgeof takeup cam,take-np lever,'-and sliding bar, and cams and portions ofbars for operating needleturning segment and locking-loop spreader. Fig.30 is an enlarged side view of the front end of born, withtension-disks, take-up bar, and thread-controller inside, and withportion of needle-bar bearing, extreme end of buttontrough,and point oflockingloop spreader just entering loop below the needle-eye above.

Fig. 31 is a view of same mechanism as represented in Fig. 30, with theaddition of the bevel-pinion on needle-bar and the lockingloop spreaderpassed through the loop and over the button. Fig. 32 is an enlarged topview of front end of horn, showing lockingloop spreader carried over thebutton and with the extreme end of button-trough away' from button. Fig.33 is an enlarged view of front end of born, with locking-loop spreaderpassed over the button and button-stop in position, with extreme end ofhorn carried away from secured button. Fig. 34 is a side view ofneedle-bar bearings, showing thread-guard resting upon the needle toretain the thread in barb of same during its downward movement. Fig. 35is an edge view of take-upcam andsmallcamforliftingneedle-bearingsupportand presser-foot during thefeeding of the fabric between the stitches. Figs. 36, 37, 38,39, 40,41,42,413, and 44 are enlarged perspective ,the same.

Similar letters of reference indicate corre-.

sponding parts.

A is the. body, B is the arm, and O is the horn, of the machine. D isthe needle bar bearing-support. E is the needle-bar bearing, pivoted tolower side of support. F is the needle-bar driving-lever. G is theneedle-barlever-cam. H is the needle-bar-bearing oscillatingconnecting-bar. I is the needle-barbearing oscillating lever, and J isthe cam for operating the same. K is the needle-bar turning-segment. Lis the connecting-bar. M is the lever, and N is the cam for operatingthe same. 0 is the locking-loop spreader-bar. P is the lever, and Q isthe cam for operating R is the button-trough. S is the bowl or hopper. Tis the button-shaft. U is the button-shaft support or bearings. V is thebutton-table. W is the button-trough rock-shaft. X is the long buttontrough swinging lever, and X is the short or cam button-trough swinginglever. Y is the buttonshaft worm-gear, and Z is the driving-worm.

a is the needle-bar, having a spline-groove near its lower end.

' b is a bevel-pinion, supported between needle-barbearings, and havinga spline at'its IfQ center to allow needle bar spline-groove andneedle-bar to slide freely through the same.

a is the needle-bar carrier, having a hole through it to allow theneedle-bar to turn freely inthe same, and retained in its properposition upon the needle-bar by means of collars each side, which aresecured to said needle-bar.

0 is the needle-barconnecting-rod.

d is an adjustable stud, which secures conmeeting-rod in such a positionon the end of the needle-bar driving-lever as to give the requiredmotion to the needle-bar.

eis the thread-guard, pivoted to the lower needle-bar bearing.

f is the button-stop, secured to lower needlehar bearing.

9 is the presser-foot, fitted to slide freely on the end of the arm ofthe machine, a slot being made through it where'the fastening-screwpasses, and is caused to rise and fall in unison with needle-barbearing-support by means of a screw in the hubof the latter passingthrough a stud which extends from the sliding portion of saidpresser-foot, as shown in Figs 1 and 4.

h is-the locking-loop spreader.

i is the thread-controlling device.

j is the thread-controlling rod. is and N are the lever and cam foroperating the same.

Z is the double main-loop-controlling hook, the space between beingabout the amount of the diameter of the needle-blade.

m is the bar, and a and Q are the lever and I Atthe bottom of theworm-gear Y, as shown cam for operating the same.

0 is the feed-bar, fitted to slide in a bearing on the lower surface ofthe horncover plate, the portion extending in front of said bearingbeing bent sufficiently to cause the point of the feed-pin 0, which isat the extreme end of the same, to remain below the top surface of saidhorn-cover plate when not in practical operation, as shown in Figs. 5and 17 by broken lines, but so as to be raised to pierce the goods bymeans of certain devices, hereinafter shown and explained, as shown inFig. 44, just before the feed motion takes place.

19 is the feed-bar carrier.

q is the fced-carrier-supporting rod, on which said feedcarrier isfitted to slide.

1' is the adjustable roller-block, fitted to slide on the top of thefeed-carrier. s is the adjusting screw, for changing the relativeposition of said roller-block with respect to the carrier and drivingcani G, so as to make such distance between each stitch as is required.

tistlbe feed-point-lifting rock shafaupon the front end of which is ashort lever for lifting the feed-pin. (Shown in Figs. (5, 17, and 18.)Upon the opposite end of said shaft is also a short lever,operated bythe cam Q, as shown in Figs. 19 and 20.

u is the take-up sliding bar.

v is the take-up lever, and w is the operating-cam.

:c is the tension-disk.

y is the main driving-shaftjn body of machine, and z is thedriving-pulley. The latter is secured to shaft 3, which extends quitethrough the body of the machine, and upon which is secured gear 4, whichdrives gear 5 upon the main shaft y, both gears being fitted to revolvejust inside of the left wall of the body of the machine, as shown inFigs. 8 and 1a.

Near the opposite or right-hand wall of the body ofthe machine is atrain of gears, (3, 7, and 8, which drive the button-shaft worm Z.(Shown-in Figs. 7 and 14.) Said worm is fitted to a hub extending fromgear 8, the hub being fitted to revolve freely upon the right end ofpivotshaft 9. The lower or cross bearings of the button-shaft supportare also fitted to said hub, but so as to allow the'latter to turnfreely in the same. Shaft 9 is the pivot for needlebar bearing-supportand needle-bar drivinglever. Shaft 10 is the pivot for levers M, P, andI, and is supported by right and left sides of body of machine.

11 is a bracket, upon which levers 7c and n are pivoted.

12 is a stud passing through an opening in the arm of the machine andentering and secured to the needle-har bearing-support, so as to be inmotion with the latter, the opposite end of said stud extending underthe buttoutrough in such a manner as to allow the but ton-trough to restupon it, and thus rise and fall with stud, needle-bar bearing-support,and other mechanism attached thereto.

in Fig. 12, isa ratchet, 13, pawl 14, and spring 15. The worm-gear isfitted to turn freely on the vertical button shaft; but the ratchet issecured rigidly to the same, so that by means of the pawl as anintermediate devic'c said vertical shaft may be connected ordisconnected with the worm-gear, as desired.

Upon the left-side hub of take-up cam 10 is an adjustable ring, 16,(shown in Figs. 22, 29, and 35,) which has upon it a small cam, 17,(shown in Figs. 21 and 28,) for the purpose of lifting the needle-barbearing-support, presserfoot, and other devices attached to said supportduring the feeding of the goods.

The spiral spring 18 upon the feed-carrier supporting-rod, q, (shown inFigs. 14', 15, and 16,) is for the purpose offoreing the carrier andfeed-bar back to st arting position after the feed vis completed, andspiral spring 19 (shown in Fig. 29) is for the purpose ofdrawing backthe take-up mechanism after the operation of the same. The small cam 20on periphery of ring J (shown in Figs. 3, 7, and 27) is for the purposeof lifting the short lever X, and consequently swinging the extreme endof buttontrough away from button during the throwing of the locking-loopover the latter.

I will now describe the practical operation of this machine withreference to the accompanying drawings.

A quantity of shank-buttons is placed in the hopper-bowl, as shown inFig. 1. Then a ball or spool of thread is placed in some convenientposition near the machine and the end of the thread passed through thesmall wire staples near the baseof thehorn,aud then through the smallhole in the lower side of the horn near the center. as shown in Figs. 1and 3. Then said thread is passed around the tensiondisk and small rollat the extreme end of the take-up bar, and then around the small rollunder the thread controlling device and through the eye in the end ofthe same, as shown in Figs. 5, 6, 30, 3l,aud perspective fig urcs, Sheet7, a sufficient amount of thread be iug drawn through said eye to formthe main loop, the needle and bar during this time be ing raised totheir highest pointand most vertical position, asshown in Figs. 1 and15. Then the needle-bar hearing-support and presserfoot are raised bymeans of a treadle connected with the wire rod which hangs from the backend of said ueedlehar bearing support, and a boot, shoe, or other fabricon which buttons are to be sewed is placed in a proper position undersaid presscr-l'oot, power being nowapplied to the machine by causing thedrivingpullcy to revolve in the direction indicated by the arrow drawnupon the same. The needle will first pierce the goods outside and justback of the button-eye, as shown in Fig. 5, the buttons in the meantimepassing down the inclined hopper-trough, as shown in Fig. 1, the firstone reaching the extreme end of said trough and placed and retained inits proper position by means of the button-stop and spi- ICO IIO

.- have an upward movement, causing the thread ral formof the end of thetrough, as shown in- Figs. 1, 4, 5, 8, 13. and 33. The thread-controllerwill now cause the surplus thread to be thrown against the blade of theneedle, as shown in Fig. 6, after which the needle will to fall into thebarbof the same, which at this time is in a position to takerit, saidneedle continuing its upward motion and drawing the main loop throughthe fabric until it. reaches its highest point, as shown in Fig. 36, theeye of the thread-controller being in the meantime thrown back, as shownin Figs. 29 and 36. While the needle isat its highest point,- the upperend of theneedle-bar hearing will be thrown back by the operating mech'anism, after which a downward movement of the needle-bar and needletakes place, the loop of thread being retained in the barb of the needleby means of the guard in the man-- ner shown in Fig. 34. The needle nowpasses through the eye of the button and then through the fabric,carrying with it the loop of thread until it reaches its lowest point,as shown in Fig. 23, alter which the main loop controllerhooks entersaid loop by passing each side of the needle, asshown in Fig. 23, andare car.- ried slightly forward, so as to remove the loop from the barb,as shown in Fig. 37. The needle is now again raised to its highestpoint, without a thread in the barb of the same,when the upper end ofthe needle-bar bearing will be thrown forward by the operating mechanismand the needle again forced through the fabric in its first placeoutside of the buttoneye. The main loop-controller, which has retainedthe loop during the upward and downward motion of the needle, now drawssaid loop back against the needle-blade in the manner shown in Figs.25'and 38, after which the needle is again raised, causing the loop tofall into the barb during its upward movement,

the hooks in the meantime having a backward motion, as shown in Figs. 25and 38 by arrows drawn upon the same. The upward movement of the needlecarries the loop through the fabric, but only a sufficient distanceabove to allow the point of the needle to pass over the button-eye,after which another backward movement of the top end of the needle-barbearing takes place,eausing the needle to again swing over the eye ofthe button, carrying with it the short loop of thread it still retainsin the barb. Now another downward motion is given to the needle, butonly a sufficient amount to leave the barb and loop just above thebutton-eye, in which position ahalf-revolution is given to the needleand bar by means of the small pinion, vibrating segment, and otheroperating mechanism, leaving the loop and barb of the needle asrepresented in Fi 39, after which the downward motion is con tinued,leaving the short loop around the blade of the needle, just above thebutton-eye. After the barb of the needle passes below the fabric theneedle is turned back about onethird of a revolution, and so retaineduntil it reaches itslowest point, when the threadcontrolling deviceagain throws the thread against the needle in the manner shown inFig.40, afterwhich the needle is again raised, causing the thread to fallintothe loarbof the needle during its upward movement, as before.

This loop of thread is now drawn through the- 'point of theloop-spreader is forced into the loop by means of the operatingmechanism in the. manner shown in Fig. 30, and as the motion iscontinued the loop is spread and carried out of the barb of the needlein the manner shown in Fig. 42, the needle duringthis time remaining atrest, and the extreme end of the button-trough moving away from thebutton sufficiently to allow the right curved wire under the spreadertopass between the secured and succeeding button, and by the end of thetrough, as shown in Figs. 32, 33, and 43, the motion of the spreader andwires being continued until they pass over the body of the button aboutin the position shown in Figs. 31, 32, and 43, after which the take-upmechanism draws the loop from the spreader until it closes around theshank of the button in the manner shown in Fig. 44, when the stitch iscompleted. At this stage the feedpin is' raised by the operatingmechanism and enters distance as is required to place the succeedingbutton in its proper position upon the mate rial, the end of thebutton-trough, p spreader, top end of needle-bar bearing,and all devicesconnected with the forming of the stitch beingin the meantime broughtinto their proper positions for commencing work, when the sewingoperation is repeated, as above described, until the required number ofbuttons 'are secured to the boot, shoe, or other fabric.

In consequence of theinelination of the button-shank while it ispresented to the needle, the final or looking loop slides down saidshank, when it is drawn by the take-up mechanism until it is limited inits progress by the main threads, thus presenting a snug and neatappearanee to the upper as well as the under side of the stitch. Afterthe fabric is removed from the machine, the buttons may be raised to avertical position by the fingers, or otherwise, as represented in Fig.2.

I am aware that prior to my invention machines have been made to attachshank-buttons to fabrics by the use of a cord or thread, as

Well as by other means. I therefore do not claim such combination,broadly; but

What I do claim as my invention, and desire to secure by Letters Patent,is

1. In a machine for sewing shanlcbuttons to fabrics, mechanism forsuccessively presenti n g the buttons to the needle in such a manner asto cause both the body and shank of each button to rest upon thematerial during the formation of the stitch through the eye of the same,in combination with a fabric-supporting arm and an angularalternately-vibrating reciprocating needle-bar, all constructed andoperating sul'istantially as shown and described, for the object setforth.

2. The angular reciprocating needle-bar a, vibrated in such a manner asto cause the nee dle in the lower end to alternately pierce the fabricoutside and inside of the inclined button-shank, in combination with thefabric-supporting arm and mechanism for turning the barb of the needleaway from the end of the loops during the sewing operation, allconstructed and operating substantially as shown and described, for theobject set forth.

3. The double hooks Z, for retaining and controlling the main loop afteritis forced through the fabric by the ncedle, and mechanism foroperating the same, in combination with the fabric-supporting arm andreciprocating and alternately-vibrating needle bar, all constructed andoperating substantially as shown and described, for the object setforth.

4.. The oscillating needle-bar bearings E, pivoted at the lowerend tothe rising and falling needle-bar bearingsupport, and mechanism foroperating the same, in combination with the reciprocating needle-bar,button-feed ing trough, and fabric supporting arm, all 0011- structedand operating substantially as shown and described, for the object setforth.

5. The vibrating segmental gear K, for turning the needle-barb away fromthe ends of thread-loops, and mechanism for operating the same, incombination with the oscillating neeble-bar bearings, reciprocatingneedle bar, pinion, button-trough, and fabric-supporting arm, andpivoted at lower end in line with the fulcrum ot the oscillatingneedle-bar bearings, allconstructed and operating substantially as shownand described, for the object set forth.

6. The horizontally-reciprocating lockingloop spreader h and mechanismfor operating the same, in combination with the angular reciprocatingand vibrating needle-bar and needle, needle-bar bearingsupport,buttontrough, main loopcontrollinghooks, and fabric-supportingarm,constructcd and moved in such a manner as to remove theloop ofthread from the barb of the needle after it has entered said loop andthen carry the loop over the body of the button sufficiently far tocause the loop to pass below the center ofthe same when drawn off thepoint of the spreader by the take-up mechanism,substantial ly as shownand described, for the object set forth.

7. The thread-guard e, in combination with the angular alternatelyvibrating and reciprocating needle-bar and needle, needle-bar bearings,button feeding mechanism, main 1oop-controller,andfabricsupportingarm,and constructed in its body and pivoted at its upperend to the lower needle-bar bearing in such a manner as to cause theback edge of the same to rest upon the inclined neeedle during itsvibratory motion by force of gravity, and thusby its own weight retainthe loop of thread in the barb of said needle while the latter ischanging from an upward to a downward movement, substantially as shownand described, for the object set forth.

8. The feed-pin 0 and the sliding elastic feedbar 0, in combination withthe operating mechanism, fabric-supporting arm, and sewing and loop andthread controlling devices, con structed and arranged to operate in sucha man ner as to cause said pin to enter the first hole made in thematerial by the needle duringthe sewing operation after the stitch iscompleted and then move the fabric back a sufficient distance to placethe succeeding button in its proper position to be sewed, as described,for the object set forth.

9. The feed-carrier p,adj ustable roller-block r, feed-carriersupporting-rod q,and adj ustingscrew s,-in combination with the feed-camG, feed-point-lifting rock-shaft t, feed-bar ,0, pin 0,fabric-supporting arm, and button-sewing mechanism, all constructed andarranged to operate substantially as shown and described, for the objectset forth.

10. The rock-shaft t, in combination with the elastic feed-bar 0, pin 0,cam Q, fabricsupportiug arm, and button-sewing and fabricfeedingmechanism constructed and arranged to lift the extreme front end of thefeed-bar and force and retain the feed-pin in the fabric during thefeeding operation, as shown and de scribed, for the object set forth.

11. The stud 12, in combination with the needle-bar bearing-support D,button-trough R, needle-bar afand other sewing mechanism inserted at oneend into the right side of said support, the opposite end extending under the button-trough in such a manner as to allow the latter to restupon and rise and fall with it, and thus cause the extreme end of thebutton-trough to move in unison with the presser-foot, and other devicesattached to the front end of the needle-bar bearingsupport, as shown anddescribed, for the object set forth.

12. The needle-bar lever F, in combination with the cam G, connectingbarc, oscillating and reciprocating needle-bar a, and other sewingmechanism, constructed and arranged to be pivoted on same shaft with theneedle-bar bearing-support and having an arm extending back to beoperated by the cam G, and the front end,which operates the needlebar,having a curved slot, the center of which is the arc of a circle, theradius of which is equalto the distance of the connecting-rod 0 betweenIIS centers, said are of a circle being described when the needle-barand connecting-rod are at their lowest point, so that the top end of theconnecting-rod may be moved and secured in such a position on the leveras will give the required upward stroke to the needle-barb and length ofloop drawn up. by the same, without affecting or changing the relativeposition of said barb with respect to the thread and loop controllerswhen it is at its lowest point in the fabric-supporting arm,andoperating as shown and described, for the object set forth.

13. The upright button-shaft and buttontrough support U, in combinationwith the button-trough It, hopper-bowl S, needle-bar bearing-support-D,gearing 6, 7, 8,and Y, and worm Z, constructed and arranged to receivethe vertical shaft T, and having horizontal bearings at the lower end toreceive the hub of gear 8, with sufficient space between said Dear ingsto receive the worm Z, which is secured I to the hub of gear 8, said hubbeing pivoted to and revolving concentric with the same shaft on whichthe needle-bar bearing-supportand needle-bar lever are pivoted, so thatthe upright support U may act in unison with said devices, and thehorizontal bearings be apivotal point for the hopper-trough, as shownand described, for the object set forth.

14. The combination of the loop-controller i, connectingrod j, lever 70,ring-cam N, secured to periphery of the needlebar turninglever N,fabric-supporting arm G,'and take-up mechanism,-all constructed andarranged to .control the thread before it is formed into loops andstitches, substantially as shown and described, for the object setforth. v

15. The combination of the sliding bar u,ten-

sion-disk w, lever 11, camw, fabric-supporting arm 0, andthread-controller '6', all constructed and arranged to take up the finalor looking loop to complete the stitch before theoperation of thefabricfeeding mechanism, sub

stantially as shown and described, for the object set forth.

16. The combination of the button-table V, hopper-bowl S, button-troughR, vertical shaft T, worm-gear Y, ratchet-wheel 13, pawl 14, spring15,and revolving worm Z,a1l constructed and arranged substantially asshown and described, the worm-gear Y being fitted to revolve freely onvertical button-shaft, and the ratchet-wheel 13, secured to said shaft,so that v the pawl 14, having a thumb-piece on oppo site side of turningcenter, may be conveniently used as an intermediate device to connoct ordisconnect the vertical shaft and button-table attached thereto with therevolving worm-gear Y in regulating the'supply of buttons to the end ofbutton-trough,for the object set forth. v

ROSEWELL THoMPsoN.

Witnesses:

L. S. (luring, T. M. PALMER, Jr.

